12728500129 has 8 divisors (see below), whose sum is σ = 13074271488. Its totient is φ = 12382821360.

The previous prime is 12728500123. The next prime is 12728500177. The reversal of 12728500129 is 92100582721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12728500129 - 2¹⁷ = 12728369057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a pancake number, because a pancake can be divided into 12728500129 parts by 159552 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12728500123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326034 + ... + 362980.

It is an arithmetic number, because the mean of its divisors is an integer number (1634283936).

Almost surely, 2^12728500129 is an apocalyptic number.

It is an amenable number.

12728500129 is a deficient number, since it is larger than the sum of its proper divisors (345771359).

12728500129 is an equidigital number, since it uses as much as digits as its factorization.

12728500129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46295.

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 12728500129 in words is "twelve billion, seven hundred twenty-eight million, five hundred thousand, one hundred twenty-nine".